Hi,\nFor anyone interesting in such things - I tried my triplus extension tubes on\nthe 300d for the first time today.\nThe kit lens does not work with it. Being short back focus it hits the front\nlight baffle inside the tube. I had wondered about this and now I know. One\nwould hope that genuine canon tubes would work. The triplus tubes could be\nmodified by enlarging the opening in the baffle a few mm. The camera shop has\nnot responded yet.